Scholarlink

<p>In this study, the effects of melt ultrasonic treatment on wear and corrosion behaviors of nodular cast irons were investigated. The microstructures of nodular cast irons were analyzed by in situ synchrotron X-ray tomography, SEM, and EDS. The results showed that the wear resistance of the UT specimens was superior to that of the NO UT specimen, especially for the UT 105s specimen. It was due to the obvious size reduction, increases of roundness and dispersion for graphite nodules, and increase of pearlite proportion and their lamellar spacing decrease induced by the effects of acoustic cavitation and acoustic flow. The nodular cast iron specimens experienced the galvanic effect, graphitic corrosion, pits and cracks in a 3.5&#xa0;wt% NaCl solution. However, the corrosion resistance of UT 105s specimen was significantly better than that of the NO UT specimen due to the optimizations of graphite and pearlite microstructures, and the enrichment of Cu element in interfaces between graphite nodules and ferrite induced by ultrasound.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Wear and Corrosion Behaviors of Nodular Cast Iron with Ultrasonic Treatment

  • 期刊论文

  • 发表日期：

    2025年4月5日

查看全文
  • J. Xue,
  • J. M. Shen,
  • A. J. Zhang,
  • F. Su,
  • J. Yang,
  • H. J. Huang,
  • Y. P. Mo,
  • M. X. Yao

摘要

In this study, the effects of melt ultrasonic treatment on wear and corrosion behaviors of nodular cast irons were investigated. The microstructures of nodular cast irons were analyzed by in situ synchrotron X-ray tomography, SEM, and EDS. The results showed that the wear resistance of the UT specimens was superior to that of the NO UT specimen, especially for the UT 105s specimen. It was due to the obvious size reduction, increases of roundness and dispersion for graphite nodules, and increase of pearlite proportion and their lamellar spacing decrease induced by the effects of acoustic cavitation and acoustic flow. The nodular cast iron specimens experienced the galvanic effect, graphitic corrosion, pits and cracks in a 3.5 wt% NaCl solution. However, the corrosion resistance of UT 105s specimen was significantly better than that of the NO UT specimen due to the optimizations of graphite and pearlite microstructures, and the enrichment of Cu element in interfaces between graphite nodules and ferrite induced by ultrasound.